Work-holder for copy-holders.



F. G. YAWMAN..

VWORK HOLDER FOR COPY HOLDERS. APPLICATION FILED IULY 2. 19H.

Patented Apr. 9,1918.

UNITED STATES PATENT OFFICE.

FREDERICK c. YAWMAN, or ROCHESTER, NEW YORK.

WORK-HOLDER roR corr-HOLDERS.

Specification of Letters Patent.

' Original application led April 17, 1916, Serial No. 91,584. Divided and this application led July 2, 191'?.

Serial No. 178,187.

i MAN, a citizen of the United States, and

resident of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Vork-Holders for Copy-Holders, of'which the followin is a s ecication. Y, g P

The present invention relates to work holders for copy-holders of the type in which the work holder secures the work in a pendant condition, and an object of the invention is to provide a construction in which the weight of the pendant work tends to cause the work clamping means to more firmly hold the work on the work holder. Another object of the invention is to provide a novel means of securing the work clamping means on the work holder.

To these and other ends,l the invention consists of certain parts and combinations of parts, all of which will be hereinafter described, the novel features being pointed out in the appended claims.

Figure l is a front viewof the upper portion of a work holder embodying the present invention;

Fig. 2 is a side view of such upper portion;

. Fig. 3 is a'vertical section of the upper portion, Fig. 1; and

Fig. 4 is an enlarged fragmentary view of the rear face of the work holder in proximity to the upper end of such holder.

The present application is a division of an application iled by me oneApril 17, 1916, Serial No. 91,584. In the construction illustrated in said application a work holder is movable on a frame to carry the work past a stationary line guide, as is common in a number of different machines in this art. While the present invention is illustrated in connection with a machine of the .type disclosed in my hereinbefore mentioned .application, it is apparent that it is not limited to this type of copy holder, but is designed for use in any construction in which the work is held in a pendant condition.

Referring more particularly to the drawings, 1 indicates the work holding member in the form of a sheet metal plate which has its opposite edges rolled at 2, and guided upon rods 3 on the supporting frame 4. The upper edge of this plate 1 is rolled at 5,

and is arranged in spaced relation to the upper ends of the guide rolls or tubes 2. l/Vithin the roll 5 and resting upon the upper ends of the tubes 2 is a clamp-supportmg member 6 preferably formed from a sheet metal strip with its longitudinal edges rolled, one of such rolls being received within the roll 5, and the other resting upon the u per ends of the tube 2. At opposite ends o the clamp-supporting member 6 two forwardlyand downwardly-projecting arms 7 are provided to act to support the work-clamping member.

The clamping-member in this instance consists of a bar 8 having laterally-extending arms 9 at opposite ends connected with portions 10 which turn in the arms 7 below the bar portion 8. A finger piece portion 11 may be provided on the clamp member beyond theportions 10 to facilitate the turning of the clamp member on its pivot portions 10. Coil springs 11a may be connected to the bar 8 near opposite ends of the latter, said springs being preferably anchored to lugs l2 on the arms 7 below the pivot portions 10. These springs tend to hold the bar portion 8 toward the plate 1, and if the bar portion 8 be swung on its pivots 10 outwardly away from the plate 1, until the lugs or stops 13 are engaged by the arms 9, then the springs 11 will act to holdthe clamping bar 8 away from the work holder plate 1. If desired, the clamping bar 8 may be provided at intervals with rubber or other friction sleeves 14..

For holding turned leaves, a coil spring 15 may be provided, said spring having its ends connected to upwardly-extending lugs 16 on the plate 7 so that the spring lies horizontally above the upper end of the worksupporting plate 1, and may be liexed laterally to permit the introduction of the leaves beneath it and the upper edge of the plate.

To secure the work to the work holder, the linger pieces 1l are manipulated to throw the clampmg bar outwardly away from the plateV 1. The work is then placed against the plate with its upper edge in proximity to the upper edge of the plate, after which the nger pieces 1l are again manipulated to throw the bar 8 toward the work. Owing to the fact that the turning axis of the clamping bar 8 is below the bar, the latter tends to swing toward the plate or work holding member 1 under the weight of the Patented Apr. 9, 1918.

Worlr held by the bar, thus causing the clamp bar S to create a binding action on "the work proportional to the weight of the Work, and preventing the work from being released due to the action ot its weight. As the clamp bar S is carried by a frame (5, which is connected to the work supporting plate in the manner shown, it is possible to increase or decrease the length of the clamping member by removing the latter and its supporting plate G from the plate l, and iting :mother clamp and supporting member to said plate of a ditferent length. This is a desirable feature in a device 'of this kind7 for it has been that in different offices Work of different lengths must'be held in the copy holder, and the present arrangement permits the securing ot a clamping member which will hold work of any Width.

1What l claim as my invention and desire to secure by Letters Patent is l. A work holder comprising a Worlr holding member formed from sheet metal with rolled guides at opposite sides and a rolled edge spaced from the upper ends of the rolled guides, a clamp-supporting member engaging Within the roll at the upper edge and resting upon the upper ends of the rolled guides, and a clamping device carried by said clamp-supporting member.

2. Work holder comprising a Work holding member mounted to support the Work in a pendant condition. supporting naanoo@ 'arms projecting forwardly from opposite sides ot' the Work holding .member near the upper end of the latter, and a pivotally mounted clamping bar supported by said arms, the pivots of said bar being below the clamping portion thereof so that the Weight or the ivorlr tends to draw the bar toward the work holding member.

3. A. ivorl: holder comprising a Work holding member mounted to support the Worlr in a pendant condition, supporting arms projecting forwardly from opposite sides of the Work holding member near the upper end of the latter, a clamping member having a bar portion and laterally-extending arms at the ends of the bar portion, said ends being pivoted to the arms below the bar portion, and springs acting on said clamping member to hold it toward the Work support or away from the Work support.

l;. A Work holder comprising a Work holding member mounted to support the Work in a pendant condition, and a pivotally mounted clamp for holding the Work to the Work holding member, the pivotal axis of said clamp being parallel With the plane of the work holding member in spaced relation to the front of said member and below`r the Work engaging portion of the clamp so that the weight of the VWorlr tends to draw the -Work engaging portion of the clamp toward the Worlr holding member.

FBEBERCK G. YAM/'MAN 

